Google Search is adding site names to mobile search results to make it simpler to identify the website linked with each result, and it’s also explaining how you may designate your preferred site name with structured data.
Site names are presently accessible for mobile Google Search results in English, French, Japanese, and German, with more languages to follow in the coming months.
Google Search uses several sources to determine the site name for a search result. Using structured data on your homepage, you may tell Google what your desired site name should be. Check out the Site name documentation for further details on achieving this.
Google advised revisiting the documentation for favicons for the latest best practices. Google advised providing an icon that’s at least 48px, and follows the existing favicon guidelines.